Pentair 920 Series - Whats New in Raychem 920 Series; Important Warnings and Notes

5 / 82
EN- Raychem920series-IM-H5687405/15
INDUSTRIAL HEAT TRACING SOLUTIONS
WHAT’S NEW
This section provides a summary of the new features that have been added since the last version
of this manual was printed. It is assumed that the reader is already familiar with the earlier
versions of the 920 Controller.
NEW CONTROLLER FEATURES
• Alarmfilteringisnowavailablefor:
– LOW and HIGH TS ALARMS (see sections 3.7.7 on page 33 and 3.7.8 on page 34)
– LOW and HIGH CURRENT ALARMS (see sections 3.8.2 on page 35 and 3.8.4 on page 36)
– HIGH GFI ALARMS (see section 3.8.6 on page 36)
– LOW and HIGH VOLTAGE ALARMS (see sections 3.8.9 on page 37 and 3.8.11 on page 38)
– LOW and HIGH RESISTANCE ALARMS (see sections 3.8.13 on page 38 and 3.8.15 on page 39).
Alarm filtering will prevent an alarm from being indicated until the alarm condition has existed for
the duration of the alarm filter time.
• TwonewSWITCHCONTROLMODEShavebeenaddedforusewithAmbientTemperaturecontrol:
– Proportional Ambient SSR
– Proportional Ambient Contactor (see sections 3.5.3 on page 21 and 5.2 on page 50).
• ASCIIandRTUModBus™communicationsprotocolsupport(seesection3.9.1onpage42).
• Supportforanisolated,2-wireRS-485communicationsinterface(seesection1.4.5).
• A3-phasepowercalculationfeaturehasbeenincludedforusewithbalanced,Y-connected
heating loads (see section 3.5.10 on page 23).
• ATemperatureSensor(TS)FailModefeatureisnowavailabletoallowtheoutputtobeforced
ON or OFF when a control temperature failure occurs (see section 3.5.11 on page 23).
• ATEMPBUS™featuretoallowone“master”920controllertoshareitstemperaturesensor
information with up to 25 “slave” controllers (up to 50 control points). This includes the addition
of three TS CONTROL MODES (see sections 3.5.12 on page 24 and 5.4 on page 53).
• Supportfor100ohmnickel-ironRTDsalongwiththestandard100ohmplatinumtypes(see
sections 3.5.13 on page 24 and 3.5.16 on page 25).
• Manualvoltagesourceselection(seesection3.5.19onpage26).
• SupportforFORCEONandFORCEOFFmodesusingtheEXTERNALinput(seesections3.5.27
on page 28 and 3.6.3 on page 29).
• Featurestoreloadfactorydefaultparametersaswellascopyconfigurationparametersfrom
one point to another are now included (see section 3.11 on page 46).
• Newmaintenancealarmingtotrackcontactorwear(seesection3.8.23onpage42).
• MonitorPEAKLOADCURRENT,PEAKGFI,andtheEXTERNALINPUTSTATUSthrough
communications (see sections 4.3.6 on page 50, 4.3.7 on page 50, and 4.3.8 on page 50).
NEW OPERATOR CONSOLE FEATURES
• Theabilitytoadjustthedisplayscrollrateisnowavailable(seesection3.6.10onpage31).
• Maintenancedataresettingisnowsupported(seesection4.3onpage49).
• DisplayandresettheCONTACTORCYCLECOUNTER(seesection4.3.3onpage49).
• LimittherangeoftheCONTROLSETPOINTsettingfor920OperatorConsoleusers
(see sections 3.5.29 on page 29 and 3.5.30 on page 29).
• AnUNLOCKDATABASEfeaturewasaddedtothe920OperatorConsole’s“ConfigurationMode
Main Menu” (see section 3.10.3 on page 46).
• Thedisplaytestnolongeroccursatstartup;instead,theusermayactivateitfromamenu
option (see section 3.10.5 on page 46).
IMPORTANT WARNINGS AND NOTES
The following icons are used extensively throughout this manual to alert you to important
warnings
that affect safety and to important notes that affect the proper operation of the
unit.
Be sure to read and follow them carefully.